催化作用
光催化
甲烷
氧合物
制作
材料科学
化学工程
X射线光电子能谱
多相催化
化学
有机化学
替代医学
医学
病理
工程类
作者
Helong Sun,Lufa Hu,Zhangyang Li,Junyu Lang,Chunling Wang,Xiaohao Liu,Yun Hang Hu,Fangming Jin
出处
期刊:Chemcatchem
[Wiley]
日期:2022-03-17
卷期号:14 (10)
被引量:9
标识
DOI:10.1002/cctc.202200001
摘要
Abstract The interface and surface acidity of heterogeneous catalysts are widely applied to manipulate the catalytic performance. However, the interface structure prepared by traditional synthesis processes required multistep procedures, which was still lack of controllability and stability. Here, we show a general synthetic approach to fabricate ultra‐stable heterogeneous catalysts with tailored molecular interfacial structure and super acidity in one step. The as‐synthesized SiW 12 O x /TiO 2 catalyst was used for photo‐catalytic conversion of methane to value‐added oxygenates. We propose that the formed molecular interface W 12 −OH−Ti coupled with the introduced Brønsted acid sites of POMs, results in enhancing the photocatalytic performance. Namely, the addition of SiW 12 O x can reduce the recombination of electrons and holes for triggering charge separation owing to the photoelectron capturing by proton, improving electron transfer to reactants and thereby promoting catalytic activity. This fabrication method provides a way to build molecular interface photo‐catalyst by POMs with super acidity and ultra‐stable structure.
科研通智能强力驱动
Strongly Powered by AbleSci AI